Hopefully they considered this: "Norway transport firm steps up controls after tests show Chinese-made buses can be halted remotely" https://apnews.com/article/ruter-yutong-china-norway-electric-buses-931f3dbdab3f82402da68cbcb31f856b
I would like to add the main issue is not that China would shut down busses, but that the possibility exists and the buyers not knowing.